Machine for forming sockets on musical instruments



April 21, 1925. 1,534,520

E. J. GULlCK ET AL MACHINE FOR FORMING SOCKETS ON MUSICAL INSTRUMENTS Filed Oct. 19. 1922 3 Shets-Sheet 1 Invent Witn I i 174W JGMMM.

Attorney Apr-11 21, 1925. ,534,520

E. J. GULICK ET AL MACHINE FOR FORMING SOCKETS 0N MUSICAL INSTRUMENTS Filed Oct 19, 1922 3 Sheets-Sheet' 2 Til: Y4

/ I I l 5 l: 0 .2 12 5 i 4 t 75 106 i v 7 I 25 l 75 s 16 I 7 r x 1 5a 79 Inventor J Attorney April 21, 1925. 1,534,520

E. J. GULlCK ET AL MACHINE FOR FORMING SOCKETS 0N MUSICAL INSTRUMENTS Filed Oct. 19, 1922 3 Sheets-Sheet 3 ill ml.\ v

17 i tness W @mm gaining Attorney Patented 2211, 1925,

w uniarsn stares- Parent oFFi-cs.

EDWARD J. GULICKAND1VIGRRIS V. l-IARVKINS, OFELK-HART, INDIANA, AS'SIGNORS TO C. G; CONN, LTD, F ELKHART, INDIANA, A. CORPORATION OF INDIANA MACHINE FOR. 1iC RIMIiil' lur SOGKETSVON MUSICAELi INSTRUMENTS? Applicationfiled October 19, 1922. Serial. No. 595,6?2.

To all who nu it WZd-Yf/COWCQW'L Bert. known that we, EDWARD JLGULIOK and Mourns V. Hawnms, citizens of the United. States,- and; residents otthe-city of Elkhart county. of Ellrhart,.Indi-ana, have.

. invented new and/useful Improvements in Machines for. Forming Sockets on Musical. Instruments, of WllIClI the. following is a.

specification This invention .relatesto improvements in the manufacture. of: musical instruments and.

particularly brass instruments, like saxophones.

It. is an object of the invention to provide.

'a. method andia. machine for producing on the bodies of brass instrun'ients tubular pro-.

joctions or projecting sockets which in the finishedinstruments serve as valve seats.

. It. is an object oftheinvention toapply;

thesesocketsto the body of the instrument by producing them as an integral portion of.

the body.

It is furthermore an object of the inven tion to, provide a method and aimachinein which the production of the socket 1s efi ectedby. applying, a pulling force at a predetermined. point in the interior of the body outwardly thereof, so as to create. protrusions at predetermined points ofthebody.

it is also' an. object of the invention to a provide a method and a machine by means ot which sockets of different diameters may readily be applied: without necessitating al-- terations in. the mechanism of. the machine.

The invention also contemplates. toprovide means for. applying. these sockets in different. planes intersectingthe body of the.

instrumentradially.

Another object otthe. invention isto securely lock thesaxophone body during the treatment in. the. machine against rotation about its axis andft-ov also hold it against.

ta-ting the rapid location and mounting or dlsmounting. oi the saxophone body on a support which forms part of the machine. With these and. numerous otheuobjects: in.

view the. method is idescribedlin tl1efollowingspeeification to be carriedout by means of amachine which is also describedbyway ofexainple, the novel features beingpointed out in the appended claims. In the drawings:

F igure 1 is a front elevation ofthe. may parts being shown in-sectlony chine, certain Fig. 2 is a detail elevation with. parts shown in section, offthe turret in its. relation to the saxophone body in. operative position of a socket; i

Fig. 3 is a. section on line 33of'Fig. 2;

Fig. 4 is a detail section of'the adjusting.

mechanism for the turret, on line lef of Fig.2}.

Fig. 5 is a portion of a section on line 5+5 of Fig. 1,showing the indexing mechanlsm;

Fig. 6 is a sectional view on line 6-6of Fig 5, certain parts being shown in elevae tion;

F ig. Tis a portionofa section also on line 5-5, 1, showing alocking mechanism for retaining the instrument carriage in a predetermined position;

Flg. 8 is a sectional detailview through the. index wheel locking mechanism Fig. 9 illustrates the shank for the pull.- ingball, partly inisection and partly inclevation, and

Figs. 10. 11 and 12 are elevation. central section andtopplan view respectively of the pulling ball.

The body oi'- a brass instrument and" particularly the" body of a saxophone usually (301111311863 4). more orless tapering hollow;

member of sheet metal... In ordertomodh late the sound; the finished instrument is provided with valves which are not shown in the. drawing and" which are to be controlled by the player. The method and ma. chine described in the following aim at the production of small protuberances or sockets extending from the body ofthe instruinent outwardly and servingin thefiHish'ed instrument as seats for the manually 0on trolled valves. In order to produce these sockets the taperlng' body S is therefore provided with holes 6 which are considerably smaller in diameter than the sockets to be formed by the enlargement of these holes and by the production oi cylindrical flanges rising from the saxophone body.

The method, therefore, may be said to consist essentially in drilling a hole in a saxophone body and then enlarging said hole by pulling the material adjacent the edges of the hole outwardly and shaping said pulled portion of the material into truly cylindrical term. The method concisely stated, includes the steps of placing a pulling tool in the interior oi the saxophone body and then forcibly withdrawing said tool radially outward through the previously provided opening, thereby enlarging said opening and creating flanges which surround the enlarged opening. These steps are combined with the steps {or confining the size of thetlangge or diameter of the socket produced and with the steps of smoothening the inner surtace ot the socket during the production thereof.

.Vhile various machines may possibly be utilized for carrying out the method, a preferred embodiment of a machine for performing the method is described in the following and also terms a part oi: the present invention.

The frame 01 the machine comprises a standard 1 which supports a longitudinal bed or table 2 of channel shaped cross-section, Fig. 5.

'lhebed supports a movable carriage 6 having on its under face a rack bar 7, Fig. 5, in permanent engagement with a pinion S which is mounted on a shaft 9 journaled at a suitable place in the walls of the bed. The spindle 9 is equipped wi h a hand wheel 10 whereby upon rotation of this hand wheel and the pinion 8, the carriage 6 may be adjusted longitudinally of the bed.

For the purpose of guiding the carriage 6 in this movement, the bed is provided on the front wall with an undercut longitudinal projection 11, while the opposite wall has a straight shoulder 12 and supports a jib or bar 13 presenting an undercut surtace opposite to that of the shoulder 11 The carriage 6 engages these undercut surfaces by means of a downward projecting; extension having suitably beveled edges. The necessary pressure may be maintained through the adjustment of screws 14- which impinge against the back of the jib 13.

The carriage 6 carries near one end an enlargement through which extends a transverse pin 15. On this pin is pivotally mounted the rear end or the support 16 which extends longitudinally of the machine and which is preferably constructed as shown in Fig. 5 of a channel shaped cross section opening downward, this support also having on its upper surface an undercut projection which may extend substantially over the entire length of the support, as illustrated in Fig. 1. It will be obvious, there fore, that upon longitudinal dispacement ot' the carriage 6, the support 16 also will be displaced longitudinally, while transverse adjustment may be effected through the transverse adjustment of the bed described. Furthermore, the angular position oi? the support with respect to the carriage and bed may be altered owing to the pivotal connec tion of the carriage 6 with the support 16.

The support 16 serves for receiving spaced bearing elements by means of which a mandrel is rotatably carried and by means oil which this angular relation of the mandrel relatively to the bed or carriage 6 may be altered, depending upon the requirements of the case. One end hearing, as shown in Figs. 1 and 6, comprises a tubular head 17 on an integral stem 18. This hearing has a swivel connection with the support 16 and for this purpose a collar 19 is secured on the support 16 above the pivot 15 ot the same. The stem 18 carries fixed thereto at its lower end a plate 21 of slightly larger diamte'r so as to be in marginal engagement with an overlying portion of the collar 19 and to be rotatable within the same. From this construction it is apparent that the bearing); 17 may be rotated in a plane in which the surtace of the support 16 is disposed.

lVithin the bearing 17 is rotatably mounted a bushing 2 1, Fig. 6, which is keyed to one end of the mandrel The other end of this bushing; is fixedly connected with a hand or indexing wheel 26. Upon rotation ot'the h and wheel, therefore, the mandrel 25 may be rotated about its axis. Longitudinal displacement of the bushing 2-1 relatively to mandrel or hearing, however. is prevented owing to the provision oi a flange 22 and a threaded collar 26 which engage the hearing, while the nut 23 on the extension of the mandrel prevents axial displaceu'ieut ot the indexing wheel.

The tapering mandrel 25 conforming with the interior surface of the saxophone body 3 is held at the opposite end in a tail stock 28 similar to the tail stock of an ordinary lathe. This end bear-in; 28 is adjustably secured to the dovetail extension of the support 16, as shown in Fig. 1, and is provided with a spindle 27 having a pointed end which enters a suitable central socket in the mandrel 25. The spindle 27 has at its rear end a tapped bore into which the screw 29 extends. A displacement of the spindle may be effected by rotation of the nut 30, which is constructed as a hand wheel.

After the body S has been placed on the mandrel 25, it is held against rotation or axial displacement thereon in any suitable way, as for instance, by a locking screw 31,

Fig; which enters through an opening of: thebody S into' atapped bo1'eofthe 1nan-- drel" Fig? 1.

Asuthe valves on instruments of'this kind are not" all" arranged" in the same axial pliinc ofthe hodyg it isnecesary to rotate the mandrelandthe loo'dyi thereon, to bring individual sockets or a series of sockets simultaneously into the plane of operation ()fitht! tool.', The" wheel. 26 is provided with indexing socketsQtS" on that face which is directed towardsthe bearingl7. A tubular h1g3? is united" with: the bearing, 17 and contains a plungerp controlled by the sprin 34, Fig. 8, which acts on a collar'of the )lnnger and on a. fi'zgediclosing member 35? ot-ithe; sleeve 321 yThe reduced end of the plunger 33 is adapted to enter-one oi? several sockets 26" in the rear face of the hand, wheel 26, to lock thereby the hand wheel and the mandrel against rotation about their axis. The withdrawal of" the plhnger 33from thesocket into which it has been inserted is effected by rotation of a handle 37 fixed to? the plunger 33 on a collarwhichisprovided \Nltl'lltt cam surface 39; This cam surface cooperates with a companimi cam surface 40 on the closing niemljier 35" of the-'lug SQ. Upon rotation of the handle 37 in, one direction, theca1n39 will affect an axial withdrawal of the plhnpger, against the tension spring 34,- while upon rotationfofth'e handle'in the opposite direction, the spring 34:Wlll force thop'lunger into a socltet 26 if the wheel and-bodyS hav'eibeenturneclto bring" one of sockets into opposition Wltl'l the 'an'dard 36;. which" is connected: with the" bed 1 of thema'chinesimilar totheordi nary standards of drill presses. is provided with alined bearings throughwhich the tool spindle -11. rotatahly extends andxin' which this spindlealso is sli dableso as to be loweredl towards the work or'raised to. withdraw from the worli,a construction which is welliknown fi'oinordinaryi drill presses; The spindle 4-1 passes slidably through a bevel gear 42" which is held against? axial displhcement. This bevel gear is driven through a companion gear 43 which may be operated from any source o'ffp'ower; (not shown 1 a i The mechanism for manually raising and lowering the spindle 41 is. indicated by a handwheel44""at'the' sidefiof the standard and con'ihined with, a" pinion engaging a rack 4-6 which is he] 1 against rotation in the machine; but which is slidable together with the spindlei llh i The lower end/of the" spindle" carries a chuck; 47 to receive the sh'anltf'ofafitool which will he described" below: This" tool is diz'uncteri These openings, as will be seen-I in Figs. 2 and 3, are equipped with thebushings 50,-.each preferably having a reduced portion 51 which has adriving fit in the respective opening of the turret, and" a reinforced outer portion 52, thefreeedge of i which is curved, Fig; 3, so as to straddle the conical portion ofthe bodyHS adjacent the opening'tobe. protruded This turret is rotatably adjustable and its axis is at an angle to the axis of the spindle, the" flange 4-9 being in such angular relation to the turret axis thatthe portion of the flange which isin operative position, Fig. 3, presents a bushing with its axis'vertically dis posed. By reference to Fig. 1, it will be seen that nine of these guiding bushings are provided in the turret, and these bush= ings may have all different diameters'or several ofthem may havedifiierentdiameters to produce different sized sockets.

F or the purpose of adjusting the turret sclectivelji to any of the numerous operative positions, a bracket 53 comprising" a split collar surrounds the standards 86 which/rises from the base of the machine, Fig"; 1. The

bracket 53 is held in adjusted position which the turret support 54- is vertically slidable and on this support the turret is rotatably mounted in that annularrelationto the axis of the standard which has inst been as scribe-d. The collar is provided near the upper end with a rack bar and this'raclr bar is engaged by a pinion htlcari'ied on a horizontal shaft 57 supported in a laterally extended l'iearingr 58 Fig. 2. which forms a part of the turret support 5%. This support, therefore, may be verti'ally adjusted relatively to the standard 36 by rotation otthe pinion 56, and the rotation oi thispinion 56 and the spindle 57is effected manually by means of a wornitransmission gear, shown in Fig. l The extended bearing 58 for the s]iiind'le 5T terminates in a a housing in which the spindle 57 is equipped with a worm gear 60in mesh with a worm 61 at the lower end of a shatt 62 which is supported in thehousing' 59andin bearings of a conical extension 63. The projecting end of the shaft 62 carries fixedly the hand'wheei 64, whereby through the rotationo'fthe hand wheelan'dhworm 61 the worm gear 60, the spindle 57 and the pinion 56" are turned, the pinion then also being" vertically displaced along :he rack-bar '55.-

By this means the entire turret support he is raised or lowered relatively to the saxophone body and to the parts of the machine.

The turret is rotatably carried on the support by a pin or bolt extending through the support. The inner end of this pin (35 has a relatively large flat head 66 which tits into a recess 67 on the lower face of the bottom 48 oi the turret. Holding screws 68 of which "four are illustrated in Figs. 2 and 3, are threaded into the heat 66 and thereby secure the turret to its pivot A nut 69 is mounted on the opposite projecting end ot the pivot pin.

Locking devices maintain the turret in any one of several predeteri'nined operative positions, and for this purpose, sockets 70 in bottom part 4118 are each adapted to receive the conical reduced portion of a sprinfz controlled plunger it, which is slidably mounted. in a bore 72 ot the turret support. This plunger projects through a closing member 73 of the bore 79 and carries on its proj cting end ahead with a. lateral enlargement '24. In a lug 75 secured to the turret apport a dog T6 is pivoted at 75 whose head 77 is adapted to engage the lateral enlargement t-s. Y The tail 78 of do; 76 carries an adjustable stop screw 79, the head of which in operative position of the turret, as shown in Fig. 3, contacts a stop 80 lixed in the main bracket 53 or to some other point on the machine, and which projects through slot 81 of the turret support.

When through rotation of the hand wheel (34:, the turret is raised from the position shown in Fig. 3, after the completion of a socket, the fixed stop 80 will induce a swinging movement of the don 76 whereby the locking element T1 is withdrawn from the pertaining" socket T0. The turret, however, is still retained in its former relation to the support by an auxiliary locking device con sisting of a spring pressed ball 82 which is located in a bore 83 of the support and which is adapted to enter auxiliary sockets in the bottom a8. This auxiliary locking device, is however, a yielding device, and the operator upon using suitable force may ro tate the turret, overcoming the tension of the spring which acts on the ball and may rotatably adjust the turret to a new position, in which another s cket Set will be in opposition to the ball 82 so as to be retained thereby. When this rotary adjustment is completed the operator may lower the turrc support with the turret to seat the lower edge of another bushing 50 over the respective opening in the saxophone body, and during this lowering movement the locking device formed by the spring controlled plunger 71 will autoi'natically enter into action to hold the turret against accidental displacement.

The bed is adj ustahle back and "forth by means oi the gear and rack connection illustrated, or in some other way. A bearing lug 3 projecting from the standard carries a spindle 4;, the'lower projecting end of which has the crank handle 5. The pinion i at the upper end meshes with a rack 2 associated with the bed whereby upon rotation of the crank the bed will be moved on a plate 1 pr vided with undercut grinding;- lodges.

in order to produce truly cylindrical. flanges, the saxophone body must be adjusted to place that line on which an axial. series of sockets are arranged in true horizontal position, or in other words, instead of having the axis of the mandrel and saxophone hody horizontally on the machine, this body and the mandrel must be inclined torproduce a horizontal position of that line on which. a plane defined by the axis of body S and by the axis of the socket intersects the body.

For this purpose, the front end of the support carries an adjusting screw 88, which with its lower end impinges on a portion of the bed 6, whereby through rotation of a nut 89, mounted on the free end oi the support 16, this end will be raised and lowered to swing the entire support on the pivot 15 which forms the connection between the carriage (3 and the support. After the adjustment has been accomplished and the axis of the socket to be produced has been placed in truly vertical position, a prop of suita ole llGlQ'l'lt may be inserted between the carriage 6 and the support- ].6, and this adjustment includii the insertion or" the prop 90 may be maintained as long as saxophone bodies oi equal tapering relation have to 13 treated in the machine.

A gauging; device may be associated with the carriage 6 and the bed 2. The carriage 6, therefore, is provided with a gauge bar 00 detachably fixed to the front surface of the same and showing a plurality if sock ts 91 into which a locking element may enter. The locking device, Fig. 7, is constituted by a bracket 92 fixed at a certain point of the bed 2 and havingin its tubular head a locking plunger 93 controlled by a spring 94L. The bore is closed by plugs 95, of: which one is equipped with a cam surface 96. The projecting end 01 the plunger 93- carries fixed thereto a collar 97 having a coin eanion cam surface 98 and a handle 9?). Upon rotation of this handle in one direction the plunger naturally will be withdrawn from the position shown in Fig. i', overcomingthe action of the spring The carriage can then be longitudinally displaced by means of the hand wheel 10, and when the plunger is during this displacement released to the action of spring 9%, it will be forcibly advanced, as soon as the next socket 91 comes in opposition with the plunger, whereby the carriage is locked against further displacement. T 1e sockets 91 on the bar 90 are spaced so as to the shape of .a portion of a spherical body.

It preterably provided with symmetrically arranged pockets or recesses 101- between avlziich ribs .102 of approximately spherical contour are .left. .Therball'100 has a. short cylindricalextension 103, and centrally above this cylindrical extension a tr pped bore i104 extends into the body of the ball.

One .of these headslOO is inserted into eachrecess 106.011 thelnandrel which forms the supporteof the instrument bofdyrthe recess being in dlinel'nent with the holeio f the instrument "body to permit the introduction -o;f;a withdrawing element 107. The upper end of this element isseated inn shanlr108 and is heldulockedin the adjusted position byoneansoffa nut 109. The freeend of the withdrawing element or stem 10-? is thread ed ito engage the tapped bore 104: of the head 100. The shrink is gripped by the chuck-4E7 as shown in Fig 1, andany desirable chuelrma-ybe used for .this purpose.

The method of producingflsnged sockets on rthc saxophone body. therefore, comprises the steps of drilling holes into the saxophone bodyby means which ere very well known, and then expanding these holes from the interior of the body outwardly. This method also includes the steps otfshaping the flanges which are produced by this outward expansion andpnrticularly to limit .the outer di runeter of the flanges, this limitation being due to-the positioning of the lower ends of the bushings in the turreton, the saxophone body.

The machine which may be utilizedflfor carrying out the methodjust described operates in the embodiment illustrated, :in the following way:

The saxophone body provided with perforations is placed on theanandrel and held against rotation thereon by means of the key 31, the hole of which may be closed subsequently if desired. Previous to the emplacement of the saxophone body on the mandrel, the openings in the mandrel were each provided with one of the bells'IOO "vertical axis of the .foot 18. After the extension on body support QShesbeen inserted this hand wheel beinp; i

throu the bearing bushinq- 24; the [hand wheel no secured theretin the l ion of led owin to the provision of e key which. unites this hand? wheel with the hearing; bushing); The nut then fastens this indexing}; wheel E36 and retiiins the entire assei nbly of parts in predetrn'mined relation to each other.

Ti lie reduced endot the nmndrelissecured in place in the tail bearing; by first with drawing the spindle 2"? .end then advancing; the same until the reduced point ot'the spindle enters the. socket in the tapering end of the mandrel. The gib 9O desired to be used for that perticulsr type of saxophone or possibly only for a particular series of sockets, is then mounted on the carri ,6 and brought into suitable relation with the locking device 92 on the bed.

. In its vertical plane thetaperinp; mandrel isinow ediusted to more the iris-oft the see-id phone-body from horizontal positionend to bring 'tliatmantle line of the bot y on which the socket or sockets ere to be located. into a truly horizontal plane. This is ejziectedby suitableadjustment of the screw at the free end of the support 16 and in this adjust ment the support 18 rocked-about the supporting pivot 15 at the end of the carriage 6. It is obviously then that upon subseajiuent rotary adjustment oi the mandrel about its existhere will he always e mantle line at the top of the body which is truly horizontel. A

prop may then be inserted underthe support 16 forrelieving the adjusting screw from excessive strain.

Thii'o-ugih rotation of the bend wheel 10 sitterwithdrawal of the loclringplunger 98. the carriage 6 is now displaced onthe bed 2 until the selected. socket hole 6 of the body is in elineinent with the axis of the spindle 41-1.. l i hen this alinement is attained. the locking plunger 93 will be in opposition to a socket 91 on the bar 90 end when released to the notion of the spring 94 it will automatically snap into solid socket and lock the parts against further displacen'ient.

This adjustment ofthe mandrel is followed by a selection of the bushing, for, depending; upon the size of the socket to be nroduced, a; certain bushing; must be applied The operator rotates the hand wheel 6% and thereby the worm transmission 61. 60, until, owing to the rotation of the pinion 56 the turret bracket. 54 is raised. In this elevatingmoyeinent oi the turret bracket, the stop screw 79, prevented from following the movement ofthefbrecket will cause the dog 76 to withdrewthe loclringplunger 71 from its corresponding socket in the bottom of the turret. The operator now overcoming the auxiliary loosing device 82 rotates the to let until the selected bushing is in opposition with the socket hole into which the withdrawing element is to be inserted. l l hen this adjustment has been completed (and the operator is aided in the adjustment by the automatic entry of the locking ball 82 into the socket 81), the operator rotates the hand wheel 64 in opposite direction and again lowers the turret bracket 54: during which movement the spring will now advance the plunger 71 into a corresponding socket 70 in the bottom of the bushing carrier. This lowering movement of the turret bracket 54: is continued until the selected bushing straddles that portion of the saxophone body which contains the socket hole to be expanded.

The operator may now throw in a clutch or shift a belt, not shown, through which the drive is transmitted to the spindle ll. At the same time, he lowers by means of the hand wheel 4% this spindle into the socket hole Z) and owing to the rotation of the spindle and its downward movement the threaded part of the element 107 will enter the tapped bore 10a of the ball 100, thereby causing a screw connection between these parts. If nowthe operator reverses the reciprocating movement of the spindle without interrupting its rotation, the ball firmly gripped by the withdrawing element will be drawn upwardly through the socket hole and will thereby expand the metal of the saxophone body, forcing it into engagement with the reinforced flange 52 of the bushing and imparting to the metal of the saxophone body a substantially cylindrical shape defined by the size of the head 100 and the size of the bushing with which it cooperates. After the socket has been completed, the operator may repeatedly raise and lower the spindle while it is being rotated, thereby smoothing the inner wall of the flange and assuring a uniform size and correspondence with the size of the bushing. Owing to the provision of ribs 102 on the operative surface of the pulling ball, this smoothing or ironing eilect of the tool is greatly enhanced, and the danger of splitting the metal or marring it is absolutely avoided.

By means of a screw driver. or some other implement, the operator then withdraws the removed pulling head 100 from the stem 107 and again lifts the turret until the bushing is axially withdrawn from the flange just produced therein. The operator may now without rotating the index wheel, axially displace the carriage 6 with the support 16 mounted thereon. through rotation of the hand wheel 10, if it is desired to produce another socket in axial alinement with the first named socket. It the carriage 6 is to be displaced longitudinally, the plunger 98 is first released and will again automatically enter into the selected socket after the displacement of the bed. If, however, the next socket to be produced should be one which is in circumferential alinement with the first named socket, the operator will not displace the bed longitudinally, but merely rotate the index wheel (after release of its lock) and thereby the mandrel and saxophone body. lVhen the index wheel has been properly positioned, the exact alinement circumferentially is eiiected by the entry of the locking plunger 33 into a socket 26 of the index wheel, and now the operator may again lower the turret 54 to bring the same bushing into straddling engagement with that part of the saxophone body which is now approximately in alinement with the spindle. If necessary, however, the turret may be selectively rotated until a bushing or a different size is placed into opposition to the socket hole, now in operative position. The turret is then lowered again by means of the dand wheel and the operation is repeated.

ll hen the machine is being operated it is important that the turret 38 be maintained rigidly against vertical movement on the rack and pinion structure 55 and 56, respectively, this being effected by the use of the worm gearing GO and 61., respectively, which el'lcctually hold the turret in the lowered or operating position.

Vi e claim:

1. In a machine of the character described the combination of a support for an instrir ment body having holes, means for locking said instr ment body on said support against axial and circumferential displacement, the support being provided with recesses in opposition to said holes, said cesses having a diameter larger than the holes, enlarging tools located in said recesses and having the contour of a portion or a sphere, and means insertable into said rccesses and radially insertable into the spherical part of the enlarging tools "for withdrawing the. enlarging tools from the body.

2. In a machine of the character de scribed, the combination of a support for an instrument body provided with holes, the support having recesses in opposition to said holes, enlarging tools located in said recesses, mechanism for withdrawing said enlarging tools from said recesses, and mea s for adjusting the support relatively to s l withdrawing mechanism to selectively bring different enlarging tools into operative rela tion with said withdrawing element.

3. In a machine of the character described, the combination of a tapering support to which a tapering perforated body oi an instrument is removably fitted, an enlarging tool in the interior of the body in opposition to the perforation thereof, mechanism for removing the enlarging tool through the perforation and means for a ljus'ting the instrument body to place that llo means for adjusting a plane dehnedby the ams of the bodyand anism .lfOI moving radial line which passes through'theaxisnot said perforation into-truly vertical position. a. In a unachine 'ot the character described, the combinationot a mandrel for an lllrStLUllll-liflt body having holes; an enlargiing tool in the interior thereof, mechanism for Withdrawing the enlarging tool verti cally through a hole, a bearing for carrying a said mandreha support for said bearing and said-support to present the axis oft-he hol'ein truly vertical position. 15.111 a machine of the character described, a mandrel for a tapering instrument body having holes, a mechanism for enlarging the holes in said instrument body, and

ll-16211153 for selectivel ad'ustin rthe su ort and means tor adjusting said support relatively to sand mechanism in vertical and llOl'lZOIltttl planes.

"i". In a machine for producing a socket on an instrument body having a perforation, the con'lbination of an enlarging tool, a. mechanism for drawing said enlarging tool through the perforation in the instrument body, a support for the instrument body, means for adjusting said support in the direction of the axis of the body relatively to said mechanism, and means for adjusting support in a direction at right angle to said axis.

8. In a machine for producinga socket on an instrument body having a perforation, the combination of an enlarging tool, a mechanism for moving said enlarging tool through the Wall of the. instrument body,'a support for said instrument body, means for manually adjusting said support in a horizontal plane in different directions at angles to each other, and means for angnlarly adjust-lug said support relatively to said horizontal plane.

9. In a machine of the character described, the combination of an enlarging tool, a mechanism for moving said enlarging tool transversely through the Wall of an instrument body, a bed, a carriage longitudinally slidable on the bed, a support on the carriage, bearings mounted on said support and a mandrel for the instrument body placed on said bearings.

10. In a machine of the character described, the combination of an enlarging tool, mechanism for moving said enlarging tool transversely through the wallet an instrument body, a bed movably supported tool through wthe walls body .ablysupporting said mandrel, asupport for said bearings,

scribed, the combination of .an enlarging tool, a mechanism for moving the 1 enlarging tool through the Walls of :an instrui'nent body, including a emandrel ato .Wl'nch said instrument body isilixed, abearing lorlsaid mandrel, and imeans for .rotatably adjusting said 'lIlHDClIQl in said bearing :and. for ice ing the mandrel in adjusted position.

In a. machine of. the character described, 1 the combination with ,an enlarging tool, a. mechanism :for :moving the enlarging of an instrument body, a mandrel on :WlllClMSEl-ltl instrument is detachably mounted, bearings rotatone of said bearings being rotatable on said'supportdn a plane parallel to the plane of the support,acarriage longitudinally adjustable in the machine, and means for .pivotally supporting said support from said carriage.

14.111 a machine of the character described, an enlarging tool, mechanism for moving the enlarging tool transverselyof the Walls .ofan instrument body, abushing for guiding said enlarging vtool during movement, and means for euactlypositioning the bushingin alinenient vit-h the axis or the enlargingtool.

15. lnaanaohine for producing a flange socket on an instrument body, an enlarging tool located in the interior of (the body, a mechanism .for moving said enlarging tool through the Wall of the body, a bushing adapted to confine the diameter of the flange formed on the instrument body, and means for adjusting said bushing relatively to the body and tool.

16. In a mechanism for producing a cylindrical flange on an instrument body, and in tegraltherewith, a bushing adapted to conme the formation of the flange to a certain diameter, and means for adjusting said bushing relatively to the instrument body.

17. In a machine for producing a socket on an instrument body having perforations, enlarging tools, mechanism for moving the enlarging tools of different diameters transversely of the Walls of the instrument body through said perforations, bushings of various diameters and means for adjusting bushings of different diameters to operative relation with respect to corresponding enlarging tools.

18. In a machine for producing sockets on an instrument bodv. the combination of an enlarging tool, bushings, mechanism for moving a bushing in a direction transversely of the instrument body, a. turret having a bottom and a flaring flange, the bushings be ing mounted in said flange, means for rotating the turret to move a selectively predetermined bushing in opposition to a predetermined part oi the instrument body, means for vertically adjusting said turret to bring said bushing into engagement with the predetermined point of the instrument body, and means for moving the enlarging tool through said bushing.

19. In a socket producing machine for an instrument body, flange forming mechanism, a plurality of bushings, a rotary carrier for the same, means for adjusting said carrier to bring a selectively determined bushing into operative relation with respect to the flange forming mechanism and to a predetermined point of the instrument body, loci;- ing means for retaining said carrier in said relation, and automatically acting means for releasing the locking means upon movement Ol f said carrier in a predetermined direction.

20. In a socket producing machine for an instrument body, flange forming mechanism, a plurality of bushings, a common carrier for said bushings, said carrier being adjustable to bring a selectively determined bushing into engagement with said body and into operative relation to the flange forming mechanism, a locking element for retaining the carrier in adjusted relation, means .t'or withdrawing the bushing from engagement with said body and means for automatically releasing the locking element upon withdrawal oisaid bushing.

21. In a socketproducing machine for an instrument body, flange forming mechanism, a plurality of bushings o't diflferent diameters, a common carrier for said bushings, means for moving a selectively determined bushing into engagement with the body and in operative relation to said mechanism, and tor removing it from said position, the carrier being rotatably adjust-able, means for locking the carrier in operative position, and mechanism controlled by movement of the carrier for releasing the carrier to rotary adjustment.

in a socket producing machine for an instrument body, a flange applying mechanism, including a bushing, a carrier for the same, means for bringing the bushing into engagement with said body, a locking element for the carrier, means for automatically releasing the locking element upon movement of the bushing from said body, and an additional yielding locking device torsaid carrier independent from the movement oi the bushing.

23. In a socket producing machine for an instrrunent body, a .i'iism comprising a bushing, a rotatable carrier for the same, means for vertically adjusting said carrier on the machine, loching element for holding the carrier against rotation and automatic means for withdrawing said element "from locking position upon vertical adjustment of the carrier in a determined direction.

2%. in a socket producing machine for an instrument body a flange applying mechanism, a standard, a bushing, a collar mounted on said standard, a. carrier for the bushing vertically adjustable with respect to said standard and rotatably adjustable with respect to the instrument body, means for locking the carrier against rotary adustment, and means fixed to said collar -for etlecting release of the last named locking means upon vertical adjustment of the carrier to a predetermined extent.

In witness whereot' we have afiixed our signatures hereunto this l lth day of October, 1922.

EDl/VARD J. GULICK. MORRIS V. HAlVKINS.

flange applying mecha- 

